body,html{
    width: 100%;
    height: 100%;
    margin: 0;
}
.el-menu{
    border: none;
}
.login_page{
    background: #324057;
    width: 100%;
    height: 100%;
}
.form_contianer {
    width: 320px;
    height: 210px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -105px;
    margin-left: -185px;
    padding: 25px;
    border-radius: 5px;
    text-align: center;
    background-color: #fff;
}